Improvement in oil-pumps



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LEVI S, LAPHAM, OL1 PROVIDENCE, RHODE ISLAND, ASSIGNOR TO MARY S. BROWN,OF SAME PLAGE- Lettersv Patent o. 104,168, dated June 14, 1870.

IMPRQVEMENT IN oIL-PMPS.

i The Schedule referred to in these Letters Patent and making part Ofthe Same.

I, LEVI S. LAPHAM, of Providence, in the county .of Providence and Stateof Rhode Island, havevinvented certain Improvements in OilPnmps forLubricating Steam-Engines and Mach-inery, of which the following is aspecification.v

Nature and Objects of the Invention.

My invention relates to the arrangement of the valves in the pump,ius'uch a manner that the pump may be readily filled with oil -from thereservoir without, and then injected into the steam-chest or cylinder ofan engine, without the necessity of opening or shutting any.cock.orvalve, as 'has heretofore been necessary iu all other pumps, to preventthe escape of steam or the blowing out of the heated oil.

Description of thcAccompan-ytny Drawing.

Figure 1 is av side elevation of the pump, 'with ythe lower portion Vinsection, showing the working parts.

Figure 2 is a plan of' the base, showing the location .of the valves.

i i are two valves, which prevent the return of the oil to the reservoirwithout.

p isthe passage from the pump to the outlet.

r is a valve, which prevents the oil from returning to the pump afterhaving once passed it.

"w isla spring, which serves to keep the valve r `closed .when nopressure is on the pump.

vs is a plug, which serves as a seat for the spring, through which is anopening, t, for the passage oi the oil. u is a plug, which may heremoved and the oil taken from the side instead of the bottom.

The oil, in passing from the reservoir to the engine, is drawn by thepiston a through the passages e e, lifting the valves 'i t', passingthrough the passages o o, in tig. 2, into the space f, left bythe pistona.v By a reversed motion of the piston, the oil in the space fis forceddown the passage p, opening' the valve r, and thence out at the openingt or u, as the case may be.

Claim..

I claim as my invention- The combination of one or more valves, asi i.,and the valve r, together with the passage o, arranged substantially asand for the purpose herein set forth.

LEVIS. LAPHAM.

Vituesses:

D. B.P01Tnn, H. H. BROWN.

